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Direct moulded soles in footwear production
After adhesion and stitching, a third possible mechanism exists to attach soles to uppers – direct moulding, as this article explains.
In the direct-moulded process, the sole is both formed and attached to the upper at the same time, thus effectively saving an operation. However, the shoemaker then becomes responsible for moulding the sole rather than buying it in from a supplier.
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